Rational vs. Irrational

What is a rational number ?

• A rational number  is a number that cannot be written as a fraction.
• A rational number is a number that can be written as a fraction.
• A rational number cannot be a repeating  decimal.

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CCSS.5.NBT.A.2

What type of number is π ?

• Rational
• Irrational

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CCSS.8.NS.A.1

CCSS.8.NS.A.2

Which number is irrational?

• 9.6
• √45
• 3/8
• 3.4 x 10 ⁵

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CCSS.8.EE.A.2

CCSS.8.NS.A.1

Which number is a rational number ?

• 1/4
• π
• √3
• ∛25

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CCSS.8.NS.A.1

√7

• Rational 
• Irrational

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CCSS.8.NS.A.1

√25

• Rational
• Irrational

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CCSS.8.NS.A.1

-17.565

• Rational
• Irrational

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CCSS.8.NS.A.1

.141414141414...

• Rational 
• Irrational 

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CCSS.7.NS.A.2D

CCSS.8.NS.A.1

√3  

• rational
• irrational

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CCSS.8.NS.A.1

The √98 falls between what two numbers on a number line?

• 10 and 11
• 11 and 12
• 9 and 10
• 90 and 100

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CCSS.8.NS.A.2